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BOSTON MARATHON 2023

Carolyn Butterworth

Bib: 23511•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:18/mi
25:46
↑ 97↓ 3451.5%
10K· 6.21 mi
8:57/mi
53:35
↑ 79↓ 1380.4%
15K· 9.32 mi
9:23/mi
1:22:44
↑ 67↓ 78
20K· 12.43 mi
10:00/mi
1:53:47
↑ 106↓ 860.1%
Half· 13.11 mi
10:08/mi
2:00:42
↑ 19↓ 370.5%
25K· 15.53 mi
10:29/mi
2:26:07
↑ 66↓ 880.2%
30K· 18.64 mi
10:37/mi
2:59:05
↑ 181↓ 1480.2%
20M
11:17/mi
3:14:25
↑ 64↓ 500.2%
21M
13:30/mi
3:27:55
↑ 106↓ 241.6%
35K· 21.75 mi
10:27/mi
3:35:44
↑ 17↓ 861.7%
23M
10:49/mi
3:49:17
↑ 23↓ 630.6%
24M
10:22/mi
3:59:39
↓ 821.3%
40K· 24.85 mi
10:37/mi
4:08:44
↓ 200.3%
25.2M
11:30/mi
4:12:42
↑ 13↓ 160.2%
Finish· 26.22 mi
10:39/mi
4:23:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:42
Pace9:12 /mi
2nd Half
Distance13.11 mi
Time2:22:51
Pace10:54 /mi
📊Positive Split: 18.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:5325:468:1825:46
8:18
-
10K
6.21 mi12:08:4253:358:3727:49
8:57
+0:39
15K
9.32 mi12:37:511:22:448:5329:09
9:23
+0:26
20K
12.43 mi13:08:541:53:479:0931:03
10:00
+0:37
Half
13.11 mi13:15:492:00:429:126:55
10:08
+0:08
25K
15.53 mi13:41:142:26:079:2425:25
10:29
+0:21
30K
18.64 mi14:14:122:59:059:3632:58
10:37
+0:08
20M
20.00 mi14:29:323:14:259:4315:20
11:17
+0:40
21M
21.00 mi14:43:023:27:559:5413:30
13:30
+2:13
35K
21.75 mi14:50:513:35:449:557:49
10:27
-3:03
23M
23.00 mi15:04:243:49:179:5813:33
10:49
+0:22
24M
24.00 mi15:14:463:59:399:5910:22
10:22
-0:27
40K
24.85 mi15:23:514:08:4410:009:05
10:37
+0:15
25.2M
25.20 mi15:27:494:12:4210:023:58
11:30
+0:53
Finish
26.22 mi15:38:404:23:3310:0410:51
10:39
-0:51

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

8:18 /mi

Average Pace

10:04 /mi

Slowest Pace

13:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:44

31% of race

Time at Steady Pace

2:28:01

56% of race

Time at Slower Pace

32:48

12% of race

Average Pace: 10:03 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:40:5325:468:1825:46
8:18
#16118
10K
6.21 mi12:08:4253:358:3727:49
8:57
#18658
15K
9.32 mi12:37:511:22:448:5329:09
9:23
#20019
20K
12.43 mi13:08:541:53:479:0931:03
10:00
#21021
Half
13.11 mi13:15:492:00:429:126:55
10:08
#21203
25K
15.53 mi13:41:142:26:079:2425:25
10:29
#21608
30K
18.64 mi14:14:122:59:059:3632:58
10:37
#21768
20M
20.00 mi14:29:323:14:259:4315:20
11:17
#21938
21M
21.00 mi14:43:023:27:559:5413:30
13:30
#22176
35K
21.75 mi14:50:513:35:449:557:49
10:27
#22170
23M
23.00 mi15:04:243:49:179:5813:33
10:49
#22157
24M
24.00 mi15:14:463:59:399:5910:22
10:22
#22143
40K
24.85 mi15:23:514:08:4410:009:05
10:37
#22124
25.2M
25.20 mi15:27:494:12:4210:023:58
11:30
#22112
Finish
26.22 mi15:38:404:23:3310:0410:51
10:39
#22155
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi161185362536221915(Top 82%)8743(Top 77%)8743(Top 1073%)
10K6.21 mi3.10 mi18658-25406919-15576919-155720701(Top 78%)8090(Top 71%)8090(Top 993%)
15K9.32 mi3.11 mi20019-13617753-8347753-83421915(Top 82%)8743(Top 77%)8743(Top 1073%)
20K12.43 mi3.11 mi21021-10028290-5378290-53722899(Top 86%)9303(Top 81%)9303(Top 1141%)
Half13.11 mi0.68 mi21203-1828374-848374-8423555(Top 88%)9651(Top 84%)9651(Top 1184%)
25K15.53 mi2.42 mi21608-4058602-2288602-22823170(Top 87%)9476(Top 83%)9476(Top 1163%)
30K18.64 mi3.11 mi21768-1608700-988700-9822439(Top 84%)9149(Top 80%)9149(Top 1123%)
20M20.00 mi1.36 mi21938-1708811-1118811-11123153(Top 87%)9598(Top 84%)9598(Top 1178%)
21M21.00 mi1.00 mi22176-2388950-1398950-13924582(Top 92%)10385(Top 91%)10385(Top 1274%)
35K21.75 mi0.75 mi22170+68961-118961-1122290(Top 84%)9208(Top 81%)9208(Top 1130%)
23M23.00 mi1.25 mi22157+138963-28963-222016(Top 83%)9082(Top 80%)9082(Top 1114%)
24M24.00 mi1.00 mi22143+148963896321718(Top 82%)8959(Top 78%)8959(Top 1099%)
40K24.85 mi0.85 mi22124+198958+58958+521535(Top 81%)8909(Top 78%)8909(Top 1093%)
25.2M25.20 mi0.35 mi22112+128956+28956+221601(Top 81%)8916(Top 78%)8916(Top 1094%)
Finish26.22 mi1.02 mi22155-438990-348990-3423324(Top 88%)9817(Top 86%)9817(Top 1205%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

21915

Females

8743

F55-59

8743

5K→10K

3.1 - 6.2 mi

Top 78%
×5story building
+79ft-138ft

Overall

20701

Females

8090

F55-59

8090

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

21915

Females

8743

F55-59

8743

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

22899

Females

9303

F55-59

9303

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

23555

Females

9651

F55-59

9651

Half→25K

13.1 - 15.5 mi

Top 87%
×4story building
+66ft-88ft

Overall

23170

Females

9476

F55-59

9476

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

22439

Females

9149

F55-59

9149

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

23153

Females

9598

F55-59

9598

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

24582

Females

10385

F55-59

10385

21M→35K

21.0 - 21.8 mi

Top 84%
×7story building
+17ft-86ft

Overall

22290

Females

9208

F55-59

9208

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

22016

Females

9082

F55-59

9082

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

21718

Females

8959

F55-59

8959

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21535

Females

8909

F55-59

8909

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

21601

Females

8916

F55-59

8916

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

23324

Females

9817

F55-59

9817

Passing Analysis

Category:
Athletes Passed
432
Passed By
6469
Net Change
-6037
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16118
5K → 10K112551-2540#16118#18658
10K → 15K111372-1361#18658#20019
15K → 20K211023-1002#20019#21021
20K → Half4186-182#21021#21203
Half → 25K22427-405#21203#21608
25K → 30K87247-160#21608#21768
30K → 20M31201-170#21768#21938
20M → 21M13251-238#21938#22176
21M → 35K3731+6#22176#22170
35K → 23M5441+13#22170#22157
23M → 24M4834+14#22157#22143
24M → 40K4728+19#22143#22124
40K → 25.2M2513+12#22124#22112
25.2M → Finish2164-43#22112#22155
TOTALS4326469-6037
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing